Shedding mechanism for looms



(No Model.)

B. B. GOODYEAR.

SHEDDING MECHANISM FOR LOOMS.

No. 893,067. Patented Nov. 20, 1888.

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ATENT FFICEQ ROBERT B. GOODYEAR, OF PHILADELPHIA, ASSIGNOR OF ONE-HALF TO WVOLFENDEN, SHORE & 00., OF OARDINGTON, PENNSYLVANIA.

SHEDDING MECHANISM FOR LOOIVIS.

SPECIFICATION forming part; of Letters Patent No. 893,067, dated November 20, 1888.

Application filed May 16, 1887. Renewed October 13, 1888. Serial No. 288.047. (No model.)

To all whom it may concern.-

Be it known that 1, ROBERT B. GOODYEAR, a citizen of the United States, residing in the city and county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Shedding Mechanism for Looms, which improvement is fully set forth in the following specification and accompanying drawings.

My invention consists of a heddle motion for looms embodying novel features, as will be hereinafter fully set forth.

Figure 1 represents aside elevation of a por tion of a loom having my invention applied thereto. Fig. 2 represents an end view thereof. Figs. 3 and 4 represent partial side elevations and partial vertical sections thereof. Figs. 5 and 7 represent views of detached parts. Fig. 6 represents a section in line w as, Fig. 5.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, A represents a portion of the frame of aloom, and B the bed rile-levers, each of the latter having on opposite sides of its axis the upward-projecting arms or shoulders O 0. Supported on the frame above the levers B, and guided on said frame, are horizontal sliding bars D,whose under side is formed with shoulders E E, which are so disposed that they are adapted to engage with the shoulders G 0, according to the position of the bars D, as will be hereinafter more fully set forth.

F F represent supplemental slides which are fitted horizontally and guided in slots at in the portion A of the frame A. The slides F F have pivoted to them the links G G,

which cross each other and are pivoted at their lower ends to arms G which are secured by a rod, H, to the rising and falling head J, the latter having attached thereto the rod J, which is actuated by means of the cam J 2 on the drivingshaft P, it being noticed that as the head J and rod H rise and fall the links G G cause the slides F F to move in opposite directions or open and close.

To the barsD are pivoted the'weighted levers K, which have their ends formed or provided with shoulders or hooks LL, which are adapted to engage with the slides F F.

To the frame are pivoted the weighted levers M, each of which has a slot, m, through which the pivotal pin m passes, and which is elongated or extended, as shown in Figs. 3 and 4, and the said levers are so weighted that when the lever rests on said pivotal pin its inner end is the heaviest; but when the point of support is the roller of the chain the outer end from the said roller is the weightier. The inner ends of the levers M are located below the weighted ends of the levers K, whichlatter are pivoted to the sliding bars D. Below the said levers M, and in contact therewith, is the patternchain N, the latter being supported on the wheels 1?, which are mounted on the frame A and operated by the dog Q, the latter being pivoted to the lever Q, which is pivoted to the rod R, which is connected with the head J.

The operation is as follows: The chain N has its rollers 11 set or adjusted relatively to the pattern to be woven as usual in such cases, and motion of the loom is communicated to the rods R H, whereby the chain is operated, and the links G G open and close, so that the slides F F are moved in opposite directions or toward and from each other. Vb en the rollers b engage with the levers M, they form a support for the same,and the outer end of the said lever being the heavier the inner end is raised and consequently the weighted ends of the levers K, whereby the shoulders L of said levers K are projected across the paths of the slide F. (See Fig. 4..) Now as the links G G rise and the slides F F separate,the slide F engages with said shoulders L and carries the levers K with it. The sliding bars D are carried with the levers K, and thus the shoulders E of said bars D are pressed against the shoulders O of the heddle-levers B, thus lowering the relative ends of said levers-in the present case the left-hand ends. When a portion of the chain having no roller reaches any of the levers M, the pivoted point of support of said lever is changed to the pin m, and the inner end of the lever being the heavier is lowered, permitting the weighted end of its lever K to descend, whereby the shoulder L of the lighter end of the said lever is projected across the path of the slide F. (See Fig. 3.) Now as the links G G rise, and the slides F F separate, the slide F engages with said shoulders L and carries the levers K with it. The bars D are carried by the levers Kin the present case to the right-whereby the shoulders E of said bars press against the shoulders O of the heddle-levers B, and thereby lower the rela tive ends of said levers B. \Vhen the links G G lower,the slides F F are thereby returned to their closed or normal position. By these means the proper motions are imparted to the heddle-levers from the pattern-chain, the means employed being of inexpensive construction and reliable in action.

I am aware that it is not new in mechanism of the kind herein described to employ sliding bars having pivoted levers connected thereto, said levers having shoulders adapted to en gage closing and separating slides, whereby the sliding bars are operated by the said pivoted levers, and also having bow-spring connections with the levers operated by the pattern-chain, the said bow-spring connections being of advantage in case the pattern-roller changes before the lifting-bars get past the hooks when closing by yielding, thus letting the bars pass over them; but I am not aware that the construction hereinset forth and claimed, wherein the levers operated by the pattern-chain have elongated slots and weighted ends, as described,and the levers connected to the sliding bars are weighted on the ends adjacent to said slotted operating-levers, this construction insuringasafe and reliable action of parts without the use of the bow-spring or any connecting-link between the levers M and K.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-' 1. A pattern-chain, with mechanism, sub stantially as described, for operating the same,

.in combination with the weighted pivoted lever M, having the elongated slot m, the pivotal pin m, the sliding bar D, with shoulders E E, the lever K, pivoted to the sliding bar D, and having the shoulders or hooks L L, and having its end adjacent to the lever M weighted, the slides F F, the links G G, pivoted at their upper ends to said slides F F, the bar H, connected to said links and having mechanism, substantially as described, for imparting a reciprocating motion thereto, and a heddle-lever, B, with shoulders O O, substan' tially as and for the purpose set forth.

2. A pattern-chain, with mechanism, sub stantially as described, for operating the same, in combination with weighted pivoted lever M, having the elongated. slot m, the pivotal pin m, the sliding bar D, with shoulders E E, the heddle-lever B, the weighted lever K,

pivoted to the sliding bar D, and having the shoulders L L, the slides F F, and meehanism, substantially as described, for opening and closing the same, substantially as and for the purpose set forth.

ROBERT B. GOODYEAR. Witnesses:

J OHN A. WIEDERSHEIM, JAS. F. KELLY. 

